(2)No act done by an individual as a director shall be deemed to be invalid, notwithstanding that it was subsequently noticed that his appointment or nomination, as the case may be, was invalid by reason of any defect or disqualification or had terminated by virtue of any provision contained in this Act:Provided that nothing in this sub-section shall be deemed to give validity to any act done by such individual as director after his appointment or nomination, as the case may be, has been noticed by the Corporation to be invalid or to have terminated.